Noncombustible (as described and tested in accordance with ASTM E136) ToughRock® Fireguard X® Gypsum Board is designed for use in interior drywall applications for wall and ceiling construction in assemblies with a designated fire-resistant rating.1 Its dimensionally stable gypsum core is reinforced with glass fibers, increasing its strength and fire resistance. 5/8″ (15.9 mm) ToughRock Fireguard X is UL-classified Type X and has a flame-spread rating of 15 and smoke developed 0 when tested in accordance with ASTM E84.

1Consult UL Fire Resistance Directory for assembly information.

*FIRE SAFETY CAUTION – Passing a fire test in a controlled laboratory setting and/or certifying or labeling a product as having a one-hour, two-hour, or any other fire resistance or protection rating and, therefore, as acceptable for use in certain fire rated assemblies/systems, does not mean that either a particular assembly/system incorporating the product, or any given piece of the product itself, will necessarily provide one-hour fire resistance, two-hour fire resistance, or any other specified fire resistance or protection in an actual fire. In the event of an actual fire, you should immediately take any and all actions necessary for your safety and the safety of others without regard for any fire rating of any product or assembly/system. For additional information concerning fire ratings and fire safety, visit our Product Fire, Safety and Use Information page.

Fire Resistance

Enhanced fire resistance – UL classified Type X

SPECS

Physical Properties

Thickness

nominal inches: 5/8″ (15.9 mm), ± 1/64″ (0.4 mm)

Width

nominal: 4′ (1220 mm), 54” (1372 mm), 60″ (1524 mm) ± 3/32″ (2.4 mm)

Length

standard: 8′ (2440 mm) to 14′ (4270 mm), ± 1/4″(6.4 mm)

Weight

lbs./sq. ft., nominal (kg/m²) 2.2 (10.7)1

R Value

ft2•°F•hr/BTU (m2•K/W): 0.56 est. (0.10)

Humidified Deflection

max: 5/8” (16 mm)2

1Represents approximate weight for design and shipping purposes. Actual weight may vary depending on manufacturing location and other factors. 2Specified minimum values are as defined in ASTM C1396.

Warranty / Certifications

Certifications may vary by production location, please contact local representative for more information.

Installation

Product FAQs

Should gypsum board be installed vertically or horizontally?

Answer

While gypsum boards are stronger in one direction, they may be installed either vertically or horizontally on both wood and steel studs. If the boards are to be used in a fire rated assembly, then use the board orientation that is stated in your specific rated assembly.

What should we do if the gypsum board gets wet?

Answer

According to the Gypsum Association publication GA-231, gypsum board should not be allowed to get wet; it should be covered if stored outside. However, there are situations where the board could get wet during transportation/storage or when installed in-place. If the board gets wet in an installed in-place situation, first remove the sources of moisture. Lay the board on a flat surface and allow it to dry out thoroughly. Once the board is dry, examine it for paper-to-core bond and mold and mildew growth. If installed, examine for nail pops and sag (in the case of ceilings). Paper-to-core bond failure and board sag are irreversible damage, and the board should be replaced. For nail pops, place a fastener an inch above or below any popped-up nail.

What is the fire rating of ToughRock® Fireguard X® Gypsum Board?

Answer

There is not a fire rating on an individual board. The fire rating is based on an entire assembly (studs, board, fasteners, etc.) being tested together. Please consult the Gypsum Association GA-600 Fire Design Manual or UL Fire Resistance Directory for specifics on a particular fire-rated assembly. For additional information concerning fire ratings and fire safety, go to www.buildgp.com/safetyinfo.

How often is a control joint required?

Answer

Placement of control joints are determined by the design professional. When they are not designated, the requirement for ceilings and walls is the same. A control joint should be installed every 30 feet when there is not perimeter relief. When there is perimeter relief, control joints can be installed every 50 feet.